Fix that viewing gantt causes SQL error with SQL Server (#32737).

Patch by Pavel Rosický.


git-svn-id: http://svn.redmine.org/redmine/trunk@19637 e93f8b46-1217-0410-a6f0-8f06a7374b81

lib/redmine/helpers/gantt.rb

@@ -151,7 +151,7 @@ module Redmine
       def issues
         @issues ||= @query.issues(
           :include => [:assigned_to, :tracker, :priority, :category, :fixed_version],
-          :order => "#{Project.table_name}.lft ASC, #{Issue.table_name}.id ASC",
+          :order => ["#{Project.table_name}.lft ASC", "#{Issue.table_name}.id ASC"],
           :limit => @max_rows
         )
       end